Workers with salt boring equipment, Tzuliuching, Zidong

Some salt boring rigs, Tzuliuching, Zidong

Testing a new gas well, at the salt wells, Tzuliuching, Zidong

A series of man-pumps, salt wells, Tzuliuching, Zidong

Eight boring tools, salt wells, Tzuliuching, Zidong

Workers by gas-fired brine evaporating pans, salt wells, Tzuliuching, Zidong

Salt boring rigs, and boats, Tzuliuching, Zidong

Emptying the brine, salt wells, Tzuliuching, Zidong

Carrying the brine to a higher level, salt wells, Tzuliuching, Zidong

Running brine into boats, salt wells, Tzuliuching, Zidong

Horse-powered pumps to raise brine from a lower level to a higher level, Tzuliuching, Zidong

Buffalo winch, salt wells, Tzuliuching, Zidong

Man-pump, boat to piping, salt wells, Tzuliuching, Zidong

Overseers with workers weighing sewn up bags of salt, Tzuliuching, Zidong